- Compatible with Model: * Tonie Box - Battery Part NO.: * 50AA5S - Battery Specification: * Voltage: 3.6V * Type: Ni-MH * Capacity: 2000mAh * Dimension: 52.10 x 43.50 x 15.00mm Tips Before Purchase: When purchasing batteries, it is important to note that both the device model and battery model(Part NO) need to be matched, and not just the device model or battery model(Part NO). If you are unsure, please feel free to consult us at any time.